git_clone/thorvg
1
0
Fork 0
mirror of https://github.com/thorvg/thorvg.git synced 2025-07-27 08:36:59 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

sw_engine fill: correct the range of opacity,

Browse source 
also some minor code refactors.
This commit is contained in:
Hermet Park 2021-07-06 10:43:36 +09:00
parent 7a8d7ceac6
commit 925b9c8ba9
1 changed files with 4 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
src/lib/sw_engine/tvgSwFill.cpp
View file

@ -77,12 +77,11 @@ static bool _updateColorTable(SwFill* fill, const Fill* fdata, const SwSurface*
while (pos < next->offset && i < GRADIENT_STOP_SIZE) { while (pos < next->offset && i < GRADIENT_STOP_SIZE) {
auto t = (pos - curr->offset) * delta; auto t = (pos - curr->offset) * delta;
auto dist = static_cast<int32_t>(256 * t); auto dist = static_cast<int32_t>(255 * t);
auto dist2 = 256 - dist; auto dist2 = 255 - dist;
auto color = COLOR_INTERPOLATE(rgba, dist2, rgba2, dist); auto color = COLOR_INTERPOLATE(rgba, dist2, rgba2, dist);
uint8_t a = color >> 24; fill->ctable[i] = ALPHA_BLEND((color | 0xff000000), (color >> 24));
fill->ctable[i] = ALPHA_BLEND(color | 0xff000000, a);
++i; ++i;
pos += inc; pos += inc;
@ -90,7 +89,7 @@ static bool _updateColorTable(SwFill* fill, const Fill* fdata, const SwSurface*
rgba = rgba2; rgba = rgba2;
a = a2; a = a2;
} }
rgba = ALPHA_BLEND(rgba | 0xff000000, a); rgba = ALPHA_BLEND((rgba | 0xff000000), a);
for (; i < GRADIENT_STOP_SIZE; ++i) for (; i < GRADIENT_STOP_SIZE; ++i)
fill->ctable[i] = rgba; fill->ctable[i] = rgba;